PoE League Starter, Cold builds similar to Minion Instability Golem Autobomber League Starter

Pob fork: Disclaimer: I only play solo/with IRL friends, so this is technically SSF. I don't give a fuck about meta, I play to have fun. I league started with this build in mind and created it as I went. So, this is honestly my very first self-made build. So far so good, both the clear and single target feel good. I stumbled upon the combination of Sniper's Mark (spellslinger) + Pierce. You never have to think about what target is marked due to the fact that Marks are no longer a namelock skill. It also works beautifully because of how Subprojectiles work now:

I've been trying to narrow down my league starter for Heist the past couple of days. Somewhere along the line, I decided I want to do a cold DoT Occultist, more specifically a Wintertide Brand Occultist (SC-trade). I have a few reasons (that may or may not be valid, politely let me know). Full reasoning summaries below, but TLDR: I think cold DoT Occultists will survive nerfing and might even be buffed by new Hexes. Wintertide brand also feels safe from nerfing, is non-meta, and there is always Vortex to fall back on. I may or may not be able to take advantage of new Hexes more easily. Al